1. Chapter 2
Principles of Ecology 1.
The act of one organism consuming another organism for food is _______.
predation
parasitism
commensalism
mutualism A B C D
CDQ 1

2. from an autotroph to a heterotroph from a heterotroph to an autotroph
Chapter 2
Principles of Ecology 2.
Identify how energy flows through an ecosystem in a typical food chain.
from an autotroph to a heterotroph
from a heterotroph to an autotroph
from a carnivore to an herbivore
from an omnivore to an herbivore A B C D
CDQ 2

3. Which are biotic factors in a forest environment?
Chapter 2
Principles of Ecology 3.
Which are biotic factors in a forest environment?
plants and microscopic organisms living
pH and salt concentration of the soil
sunlight, soil type and soil nutrients
temperature, air currents and rainfall A B C D
FQ 1

4. Chapter 2
Principles of Ecology 4.
What is the name for a group of interacting populations that occupy the same area at the same time?
ecosystem
habitat
biological community
biotic collection A B C D
FQ 2

5. all of the biotic factors in an ecosystem
Chapter 2
Principles of Ecology 5.
Which defines habitat?
all of the biotic factors in an ecosystem
an area where an organism lives
an area in which various species interact
the role or position that an organism has A B C D
FQ 3

6. What type of organism is the foundation of all ecosystems?
Chapter 2
Principles of Ecology 6.
What type of organism is the foundation of all ecosystems?
autotroph
herbivore
heterotroph
decomposer A B C D
FQ 4

7. How do detritivores obtain their energy in an ecosystem?
Chapter 2
Principles of Ecology 7.
How do detritivores obtain their energy in an ecosystem?
They feed on fragments of dead plants and animals
They feed on organisms by releasing digestive enzymes.
They get energy from inorganic substances to make food.
They use chlorophyll to capture energy from the sun. A B C D
FQ 5

8. Chapter 2
Principles of Ecology 8.
Which type of organism exists at all trophic levels except the first trophic level?
carnivores
herbivores
autotrophs
heterotrophs A B C D
FQ 6

9. What type of organism returns nutrients to an ecosystem?
Chapter 2
Principles of Ecology 9.
What type of organism returns nutrients to an ecosystem?
decomposer
primary producer
secondary producer
top level consumer A B C D
FQ 7

10. Chapter 2
Principles of Ecology
10.
Which biogeochemical cycle involves evaporation, transpiration, precipitation and runoff?
carbon cycle
nitrogen cycle
phosphorus cycle
water cycle A B C D
FQ 9

11. combustion of fossil fuels deposition of dead material
Chapter 2
Principles of Ecology
11.
Which process in this cycle converts carbon dioxide and water into carbohydrates?
photosynthesis
respiration
combustion of fossil fuels
deposition of dead material A B C D
FQ 10

12. What are the two major life processes that involve carbon and oxygen?
Chapter 2
Principles of Ecology
12.
What are the two major life processes that involve carbon and oxygen?
coal formation and photosynthesis
photosynthesis and respiration
fuel combustion and open burning
death and decay A B C D
FQ 9

13. Chapter 2
Principles of Ecology
13.
What is the name of the process in which bacteria and lightning convert nitrogen into compounds that are useful to plants?
ammonification
denitrification
nitrate cycling
nitrogen fixation A B C D
FQ 9

14. How does energy first enter a pond ecosystem?
Chapter 2
Principles of Ecology
14.
How does energy first enter a pond ecosystem?
through growth of algae
through light from the Sun
through decay of dead fish
through runoff from fields A B C D
FQ 9